Trace Memory is a very enjoyable adventure game but, it is too short.
The gameplay works as follows..The bottom screen is used to walk around,do puzzles, and search the areas for clues. The top screen shows the scenery, the clues, and the text and dialogue between the characters.
The graphics are quite nice for the DS and sound is not the best but, it works.
All in all, if you want a adventure game that doesn't drag on and on than this game is for you. The puzzles are cool and cleverly made to keep you busy. There is also a second run through if you beat the game which is slightly different from what you get the first time.